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    • 8. 发明申请
    • METHODS, APPARATUS, AND SYSTEM FOR MASS SPECTROMETRY
    • 方法,装置和大容量光谱系统
    • US20160172180A1
    • 2016-06-16
    • US15045883
    • 2016-02-17
    • The Massachusetts Institute of Technology
    • Ian W. HunterBrian HemondHarold F. Hemond
    • H01J49/30H01J49/02H01J49/24H01J49/00H01J49/14
    • H01J49/30H01J49/0013H01J49/0031H01J49/022H01J49/147H01J49/24
    • A miniature, low cost mass spectrometer capable of unit resolution over a mass range of 10 to 50 AMU. The mass spectrometer incorporates several features that enhance the performance of the design over comparable instruments. An efficient ion source enables relatively low power consumption without sacrificing measurement resolution. Variable geometry mechanical filters allow for variable resolution. An onboard ion pump removes the need for an external pumping source. A magnet and magnetic yoke produce magnetic field regions with different flux densities to run the ion pump and a magnetic sector mass analyzer. An onboard digital controller and power conversion circuit inside the vacuum chamber allows a large degree of flexibility over the operation of the mass spectrometer while eliminating the need for high-voltage electrical feedthroughs. The miniature mass spectrometer senses fractions of a percentage of inlet gas and returns mass spectra data to a computer.
    • 一种小型,低成本的质谱仪,能够在10至50 AMU的质量范围内进行单位分辨率。 质谱仪结合了几个功能,可以提高设计的性能,而不是可比较的仪器。 高效的离子源能够在不牺牲测量分辨率的情况下实现相对较低的功耗。 可变几何机械滤镜允许可变分辨率。 机载离子泵不需要外部泵浦源。 磁轭和磁轭产生具有不同磁通密度的磁场区域以运行离子泵和磁性扇区质量分析器。 真空室内的数字控制器和电源转换电路允许在质谱仪的操作上具有很大的灵活性,同时不需要高压电气馈通。 微型质谱仪感测入口气体百分比的分数,并将质谱数据返回到计算机。